<form action="index_form.php?page=task_plan/tp-detail-add-save&id_task=<?=$_GET['id_task']?>" method="POST">
    <table>
        <tr>
            <td>Task ID</td><td><input name="ID_tp_detail"/></td>
        </tr>
        <tr>
            <td>Task Name</td><td><input name="name"/></td>
        </tr>
        <tr>
            <td>Duration</td><td><input name="duration"/></td>
        </tr>
        <tr>
            <td>Previous Task</td><td><input name="prev"/></td>
        </tr>
        <tr>
            <td>Next Task</td><td><input name="next"/></td>
        </tr>
        
    </table>
    <div class="buttonpane">
        <input type="submit" class="uibutton" value="Simpan"/>
    </div>
</form>